Can anyone recommend a web service monitoring tool?

Question

Monitoring

There is a need to monitor the performance of about 200 different web services (sites and APIs). For most, it will be enough to check the http status and look for the keyword in the response. Somewhere a more tricky algorithm is needed (make an https request, check the validity of the ssl certificate, check http-auth, check DNS records).
Popular services (like host-tracker.com) are not suitable for everything, and they will cost decently for so many hosts. Is there any ready-made tool that you can easily install yourself and add these tasks there? The notification can be generally organized through Sentry, for example.
There is a temptation to write it yourself, because. It will take about two hours to implement the basic functions. But there is a ready-made, most likely ...

Answer 1

Opinion - write what you want to see yourself, as there are many wide-ranging and excellent toolkits (zabbix, munin, nagios, cacti), but requiring constant tuning, updating and optimization for the load, and what will be better - what you you will see exactly and only what you need, and with a predictable and necessary reaction time.

Answer 2

zabbix

Answer 3

You can deploy cabot .

Answer 4

https://uptimerobot.com/

Answer 5

monitor?

Answer 6

NewRelic not suitable?